Radon decays with alpha particles, which are just bare helium nuclei, two neutrons and two protons

So the electrons will tend to stay with the new Po-218 atom, giving it a nice -2 charge, which will encourage it to attach itself to whatever random dust it passes by.

Once the alpha particle slows down, it will pick up some electrons from somewhere eventually too.

The majority of the drones that are being used right now are off the shelf DJI drones under 2k.

Domestic production wise, their heavy lift drones cost 20k, and they've started to churn out what are effectively DIY FPV racing drones with RPG warheads strapped to the bottom, and running them into tanks and APCs, cost of those likely being under 1k.